WebAug 30, 2009 · Highlights. The North Atlantic Oscillation (NAO) Index describes changes in the strength of two recurring pressure patterns in the atmosphere over the North Atlantic: a low near Iceland, and a high near the Azores Islands. Positive NAO index values indicate these features are strong, creating a big pressure difference between them. WebJan 21, 2024 · Southern Oscillation Index (SOI) (Stand Tahiti - Stand Darwin) Sea Level Pressure: Data SOI Calculation FAQ Three-Month Running Mean (Stand Tahiti - Stand Darwin) SLP 1882 - 1950: Data Equatorial SOI Indonesia SLP (Standardized Anomalies): Data Equatorial Eastern Pacific SLP (Standardized Anomalies): Data Equatorial SOI: …
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WebJan 10, 2012 · Historical Index: Monthly tabulated NAO index dating back to 1950. Indices are standardized by the 1981-2010 climatology. Back to contents : One of the most prominent teleconnection patterns in all seasons is the North Atlantic Oscillation (NAO) (Barnston and Livezey 1987). WebJan 10, 2012 · Indices are standardized by the 1981-2010 climatology. Back to contents The Pacific/ North American teleconnection pattern (PNA) is one of the most prominent modes of low-frequency variability in the Northern Hemisphere extratropics. temika cage
Arctic Oscillation and Polar Vortex Analysis and Forecasts - AER
WebApr 11, 2024 · The 30-day Southern Oscillation Index (SOI) for the 30 days ending 9 April 2024 was −2.3, while the 90-day SOI value was +6.2. The 30-day SOI has continued to decrease over the past fortnight. It is now … WebSep 30, 2024 · The following is a list of relevant historic timeseries relating to surface pressure, SST (calculated using the HadISST dataset) and other climate variables. … WebThe PDO is a long-term (10-20 year) oscillation of the Pacific Ocean in response to the changes in the atmosphere. During a warm (positive) phase, the response of the ocean … temi ipad